Flux FCN-10 is a powerful DAC/AMP pushing 16W of power into 32Ohm, and it can also work as a streamer using DLNA/Airplay. It is priced at 1299$.
iFi Audio just released its newest product - the iDSD Neo. I'ts a stationary DAC/AMP combo with Bluetooth, balanced output, and unique, futuristic design. It is priced at 699 USD.
JDSLabs Atom stack contains of the Atom DAC (99 USD) and the Atom AMP (99 USD). It is widely regarded as one of the biggest bargains in the headphone audio market. Let's see how true this statement is.
LittleDot MK IV is a tube headphone amplifier that can also work as a preamplifier. It is priced at 499$.